package voicecall.shb.echo;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;

import java.net.InetSocketAddress;

/**
 * Created by dyh on 2019/1/29.
 */
public class EchoClient {

    private String host;

    private  int port;

    public EchoClient(String host, int port) {
        this.host = host;
        this.port = port;
    }

    public void start()
    {
        EventLoopGroup group = new NioEventLoopGroup();
        try {

            Bootstrap bootstrap = new Bootstrap();
            bootstrap.group(group)
                    .channel(NioSocketChannel.class)
                    .remoteAddress(new InetSocketAddress(host, port))
                    .handler(new ChannelInitializer<io.netty.channel.socket.SocketChannel>() {
                        @Override
                        protected void initChannel(io.netty.channel.socket.SocketChannel socketChannel) throws Exception {
                            socketChannel.pipeline().addLast(new EchoClientHandler());
                        }
                    });

            //连接到服务器，connect是异步连接，在调用同步等待
            ChannelFuture channelFuture = bootstrap.connect().sync();
            //客户端通道关闭
            channelFuture.channel().closeFuture().sync();


        }catch (Exception e){
            group.shutdownGracefully();
        }
    }


    public static void main(String [] args){
        new EchoClient( "127.0.0.1",  8080).start();
    }
}
